StrataWx is the modern alternative to Active Sky's clunkiness. It feeds live atmospheric data into MSFS 2024 in real time: winds and temperature aloft, cloud decks, precipitation, pressure, and aviation hazards, written straight into the running sim through its in-game weather engine. No file swaps, no menu fiddling, and none of the abrupt jumps of older weather engines. The weather updates continuously and eases into place while you fly, anywhere on Earth, because StrataWx is built on global forecast models rather than US-only feeds.
What sets it apart
Truly live injection. StrataWx writes to MSFS 2024's in-memory weather API (updateTempWeatherPreset) from an in-game toolbar panel, the only path that updates active weather without a reload. It auto-engages the moment you open the app.
Smooth transitions. Custom per-channel smoothing (coast, then ease out, with a cold-start snap so you load straight into correct conditions) is purpose-built to eliminate the abrupt jumps of older weather engines like Active Sky.
Multi-layer clouds. StrataWx carries far more than the old three-deck limit, probing the sim's real ceiling at runtime instead of assuming it.
Global coverage. Winds, temperatures, precipitation, and computed hazards (icing, turbulence, freezing levels, convective bands) are equal fidelity worldwide via Open-Meteo and GFS, with international SIGMET, AIRMET, and PIREP advisories.
Three modes. Live for current real weather, Historical to replay any past instant from the ERA5 reanalysis archive, and Sandbox to author your own conditions.
Flight-plan aware. Pull a SimBrief route and preview real weather at each waypoint's planned altitude, with winds, temperatures, and hazards fix by fix.
Cockpit-grade UI. An EFIS-styled dashboard with cloud-deck tables, wind ladders, vertical profiles, a basemap radar view, and live METAR and ATIS readouts, in dark and light themes.
StrataWx is a lightweight companion app for Microsoft Flight Simulator 2024 (PC, Windows). It talks to the sim through the in-game weather API and a toolbar panel, so it has no meaningful hardware demands beyond the simulator itself. If your system runs MSFS 2024, it runs StrataWx.
- Microsoft Flight Simulator 2024 installed and running (PC version)
- Windows 10 64-bit or Windows 11
- An active internet connection (for live weather data)